*Pollak, Joel B. (February 2, 2018). [http://www.breitbart.com/national-security/2018/02/02/trump-nuclear-strategy-aggressive-toward-russia-obama/ AP: Trump’s Nuclear Doctrine More Aggressive Toward Russia than Obama’s]. ''Breitbart News''. Retrieved February 7, 2018. | *Pollak, Joel B. (February 2, 2018). [http://www.breitbart.com/national-security/2018/02/02/trump-nuclear-strategy-aggressive-toward-russia-obama/ AP: Trump’s Nuclear Doctrine More Aggressive Toward Russia than Obama’s]. ''Breitbart News''. Retrieved February 7, 2018. |